Investigation of the Compressive Strength of Spruce Struts of Rectangular Cross Section and the Derivation of Formulas Suitable for Use in Airplane Design (Classic Reprint)

Investigation of the Compressive Strength of Spruce Struts examines how spruce struts of rectangular and round sections behave under compression.

This classic study combines careful experiments with theory to help engineers design safer airplane structures. It covers how material properties, end conditions, and tapering affect load capacity and stability.

This edition presents practical testing methods, including how to measure compression, deflection, and bearing in real gear, and it derives formulas useful for predicting strength in tapered and uniform sections. The work discusses when Euler’s and Rankine’s formulas apply and offers approaches for quick, approximate assessments when full analysis isn’t available. It also connects experimental results to design formulas that engineers can use in aircraft design.
What you’ll experience

• Realistic testing setups for spruce struts, including square-end and round-end configurations
• Derivations of formulas used to predict maximum loads in tapered and non-tapered struts
• Comparisons between theory and experiment to guide safer, efficient designs
• Practical guidance for applying classical theory to modern wood engineering in aviation

Ideal for readers of classic engineering papers, wood engineers, and aviation designers seeking a grounded, numbers-based view of long-standing design questions.